Dynamlcally loading modules at run-time
Hi, I'm writing my first mod_perl handler. I'd like to make the handler some kind of dispatcher that dynamically loads certain modules depending on the URI called: /foo/index = require foo; $result = foo::index(); /foo/other = require foo; $result = foo::other(); /bar/index = require bar; $result = bar::index(); I'd like to ask for your advice there. Is this a clever way to go in the first place? And how would i best code this concept? Or is there a better way to reach a modular structure in a big web application? Best regards, Jochen
Re: Dynamlcally loading modules at run-time
Jochen Lillich wrote: Hi, I'm writing my first mod_perl handler. I'd like to make the handler some kind of dispatcher that dynamically loads certain modules depending on the URI called: /foo/index = require foo; $result = foo::index(); /foo/other = require foo; $result = foo::other(); /bar/index = require bar; $result = bar::index(); look into Apache::Dispatch. I haven't touched the code in a while, but it does what you're seeking. I'd like to ask for your advice there. Is this a clever way to go in the first place? And how would i best code this concept? Or is there a better way to reach a modular structure in a big web application? probably :) try looking at things like Mason, Embperl, Template Toolkit, Apache::ASP... --Geoff
Re: Dynamlcally loading modules at run-time
Hi Jochen, I'd recommend having a read of this http://perl.apache.org/docs/1.0/guide/performance.html#Sharing_Memory Not sure how much it applies to your situation, but basically, unless the different modules are very large and rarely used you really want to load them all at server startup. That way your server processes will be sharing the majority of your code and memory use will be optimised increasing the number of server processes you'll be able to run. Loading more modules after startup will increase the size of each process independantly, increasing your overall memory use. cheers, J Jochen Lillich wrote: Hi, I'm writing my first mod_perl handler. I'd like to make the handler some kind of dispatcher that dynamically loads certain modules depending on the URI called: /foo/index = require foo; $result = foo::index(); /foo/other = require foo; $result = foo::other(); /bar/index = require bar; $result = bar::index(); I'd like to ask for your advice there. Is this a clever way to go in the first place? And how would i best code this concept? Or is there a better way to reach a modular structure in a big web application? Best regards, Jochen .
